Apparatus for coating pipes and the like



A. G. PERKINS APPARATUS FOR COATING PIPES AND,THELIKE June 23, 1942.

md Nov. 25, 1940 Patented June 23, 1942 A UNITED 4sm'rl'is PATENT OFFICE Albert G. Perkins, Warsaw, N. Y., assignor to- Centriline Corporation', Ampere,l N. J., ay corporation of Delaware` Application November 23,1940, serial 10.366,901

` 5 claims'.

Ihis invention relates to certain new4 and useful improvements in apparatus for applying a protective coating of mortar or like material to the inner walls of steel pipe the like. Y

It has for one of its objects to provide an apparatus of this character having a dispensing head for distributing the coating material by centrifugal force onto the pipe wall, and means located 'centrally of such head for imparting a continuous rotating motion tothe material as it enters the plane of the head and simultaneously creating anjoutward pressure to force the `mortar in aconstant stream into the path of the distributing blades of the head.

Another object of the invention is to provide means effectually adjusting the flow of the mortar into the distributing head to properly distribute -the amount of material desired over a particular portion of the pipe Wall, as, for example, over the longitudinal rowv of rivet-headsA along the jointed` edges of the pipe-sections.

Other features of the invention reside in the construction and arrangement of parts hereinafter described and particularly pointed out in the appended claims.

In the accompanying drawing:

Figu're 1 is a side elevation of a pipe coating apparatus embodying my improvements, the same being shown in -an operating position Within a pipe line. Figure 2 is an enlarged, fragmentary, longitudinal section of the distributer head and associated parts. Figures 3 and 4 are enlarged cross sections taken in the plane of the correspondingly numbered lines in Figure Y 1.

Figure 5 is a fragmentary side view of the ported or discharge end of the feed conduit.

Similar characters of reference indicate corresponding parts throughout the several views.

While my apparatus may be employed for coating different kinds of Work, 'it has been primarily designed for treating the inner Walls of ,pipe lines with a protective coating of a plasticlines, conduits and Adjacent its discharge end, the feed conduit is 1 provided with an annular row of discharge ports I6, some of which are comparatively small in size while others indicated by the numeral Il are much larger, as shown in Figures 3 and 5. By way of example, vthese larger ports are disposed at diametrically opposite sides of the conduit and substantially in line with the jointed portions of the pipe line containing the usual longitudinal rows of rivets I8, and at which zones a heavier or larger volume .of material is desired.

Surrounding the ported discharge end of the feed conduit, in concentric spaced, relation thereto, is the dispensing headr I3 vwhich may be of any suitable construction, that shown in the drawing including radial blades I9 which receive the materialfrom the ported end of the feed conduit and thence discharge it by centrifugal force onto the pipe wall. This dispensing head is shown as being driven by an electric motor ZI! and belt 2I to the sleeve-like hub 22 of the head. 'lt Will be understood that a larger portion of the mortar will be delivered through the larger discharge ports I1 located in the top vand bottom portions of the discharge end of the feed conduit It which will result in a correspondinglylarger amount of mortar being delivered from the periphery of the -head onto that portion of the pipe containing the rivets I8, as illustrated inv Figure 3, thereby assuring a full and complete coating of the pipe' along its jointed portions.

By preference, the ports I6, II are formed in,

tion 23 for conveniently adjusting it when dematerial from the hopper to the dispensing head. 5

sired.

Located at the discharge end of the feed conduit I4 and in the plane of the discharge ports 'II-I, Il, is a rotatable device or rotor which functions to keep the mortar in a rotating motion during operation of the apparatus and also di duced end is substantially ush' with the opposing shaft end of the feed screw I5 so asto permit a free flow of the mortar onto the same, while the front or ared end-'of such body termiates substantially flush with the forward edges of the discharge ports I6, l1. The diameter of the flared end of this body is slightly less than the inside diameter of the conduit-section 23 and as the mortar is forced by the conveyor screw onto the flared body, the surface of the latter acts to force the material radially outward toward the discharge ports, Applied to this body is a plurality of blades 28 which extend generally .lengthwise thereof and obliquely to its axis of rotation, the blades being set into notches 29 formed in the body and having their outer edges parallel to the bore of the conduit section 23 and ush with the -periphery of the flared end of such body, as shown in Figure 2. These blades,

in addition to rotating and cutting into the material, force it forwardly as the ared surface of the body 21 directs it outwardly through the discharge ports.

I claim as my invention:

l. An apparatus for lining'the innerv walls .of

communicating relation to said ports for. receiv ing the material therefrom and directing it by centrifugal force onto the pipe wall'. l

2 An apparatus for lining the inner walls o pipe lines, comprising a conduit adapted-for communication at one end with 'a source of coating material and openv atfits opposite end for the discharge of the material, asleeve-like member applied to the discharge end of said conduit in 4,enclosed relation thereto and having an annular row of discharge ports therein, some 'of said ports being larger .than others, saidmember being adjustable tol different radial positions about the conduit axis and 'having means thereon for moving it to such positions, and a rotary .dispensing head disposed about said ports for receiving the material therefrom and directing it by centrifugal force onto the pipe Wall.

pipe lines, comprising a conduit adapted for communication at one end with a source of coating material and open. at its opposite end for the dis- `for preventing the axial movement of the latter vand limiting its adjusting movements, and a rotary dispensing head disposed about said ports for receiving the Vmaterial therefrom and directingfit by centrifugal force onto the pipe wall.

4. An apparatus for lining the inner walls of pipe lines, comprising a feed conduit adapted for communication at one end with a source of coating material and provided at its opposite end with ports for the radial discharge of material therefrom, a rotary dispensing head disposed in operative relation to said ports for receiving the material therefrom and directing it by centrifugal force onto `the pipe wall, and rotating means disposed in said conduit in the plane of itsdischarge ports for forcing. the materialI therethrough, said means including a. forwardly-flaring rotor against.A which the material is adapted to impinge and 4be forced outwardthrough .the ports, and blades applied tofthe 'periphery of said rotor in oblique relation toits axis, the-outer edges, of said blades being parallel tothe contiguous inner wa-ll of the conduit.

5.An apparatus. for lining. the inner -walls of pipe lines, comprising a feed conduitadapted for communication at one. endwith-a sourcel of coating material and provided at its. opposite end Withportsfor the radial` discharge of material therefrom, a, rotary. dispensing head disposed-in operative relaton..lto said-'ports for receiving. the materialth'erefrom anddirecting itby centrifugal force onto the pipewall, a .conveyor screw'in said conduit for forcing. the. material therethrough, and a rotor head applied to vsaid screw to turn therewith in the plane of said discharge ports vland 'including a forwardly-haring bodyfwhose larger diameter terminates substantially. nush with the forwardedges of the discharge ports,-

liquelyV toits axis of rotation for rotating the material and forcing it along the flaring surface of such body, said blades being coextensive withiiaring body and havingouter edges parallel.

3. An apparatus forfflining the inner walls of to the ontiguus mnr Wan of the Conduit the ' ALBERT G. PERKINS. 

